The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 04, 2001
Filed:
Sep. 01, 1994
Applicant:
Inventors:
Peter A. Reichert, Thousand Oaks, CA (US);
Benjamin J. Brown, Westlake Village, CA (US);
Assignee:
Teradyne, Inc., Boston, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 1/100 ;
U.S. Cl.
CPC ...
G06F 1/100 ;
Abstract
A tester having a fast but flexible pattern generator which is implemented using readily available memories. The tester includes a pattern memory which holds test vectors. The vectors are organized into modules. The order of execution of the modules is selected from a list stored in memory. In the preferred embodiment, memories which operate in burst mode are used to implement the pattern memory. To compensate for the decrease in data rate which occurs when execution switches between modules in the middle of a burst, the memory refresh rate is dynamically altered upon switching between modules.